Vacuum cleaner dust bag unloader



Feb. 14, 1950 c.l K. BROWN, JR 2,497,581

VACUUM CLEANER Dus'r BAG UNLOADER 2 Sheets-Sheet 1 Filed Oct. 17, 1945 Feb. 14, 1950 c, K? BROWN, JR 2,497,581

l, VACUUM CLEANER DUST BAG UNLOADER Filed oct. 17,1945 2 sheets-sheet 2 '7//////////// mw A (ffm/QL f5 K512i@ Bean/N J,

Patented Feb. 14, 1950 UNITED S Tf'AzT-ES EN T 0 F FICE (2,497,581 c -vAoUUM CLEANER DUs'rBA'G UNLoADER QCharlesKepler-Brown', Jr., Fairmont, W. Va. jApplication""oetoterfn, 19115,-se'riar-No-622.829

@l This invention relates to vacuum-:.cleaners-fof thedomestic` type and :more particularly 'sto a dust removing device for the same.

' Int-a particularform 'frequently used .fondo- -mestic purposes, the dust 'bag of cloth connected with-avacuum cleaner is emptied by dumping with `its mouth open intoan open space lorrloose 'container-Lor dust pan. Itis so .situatedwhen this is done, -thatfa-Vgreat amount of its `dust and vdebris escapesI intol the surrounding. atmos- 1 Another# object of?` the@ invention isxto provide a new and improved dust collecting arrange.- ment inal Vacuum Vcleaner that'will operate expeditiously and reduce the possibilities of emptying the dust andidebns therefrom without adefquate control overthe dust escaping.

An additional object of the present invention is to provide a new and improved dust collecting arrangement-ina vaccum cleaner that will greatlyaifacilitate the removal of the dust obltained in vconnection therewith-and enable such .removal tov be done conveniently and safely.

Other'objects will become apparent as-the in- 4vention is more fully set forth.

'In order that the invention may be more clearly .understoodiattention is.` hereby directed tothe appendeddrawings, forming part of this application and illustrating two embodiments of the invention.

Referring to the drawings: 5. Figure l 1 is an end elevation of avacuum cleaner device embodying the invention;

Figure 2 is a side view Showing the suction portion of the device shown in Figure 1;

Figure 3 is an end view showing the air discharge end of the device shown in Figure 1;

Figure 4 is an enlarged Section view taken along lines 4-4 of Figure 1 showing the dust bag in position;

Figure 5 is a similar view to that shown in Figure 4, but with the cap removed to allow the end of dust bag to project beyond the end of the cylinder face;

Figure 6 is an enlarged section view, showing the dust bag end projecting beyond the end of v.internal annular'U shoulder I 2 the cylindergandwithzthe clamp and its throwaway bag attached-'in' open position;

Figure 7 shows-'tithe position of the :dustbag lwhen the. dust is: being `emptied from the'dust bag .in ato' lthe throw-awaybag and'withfthe clamp'tightened;

Figure 8 is a section 'taken along line 8--8 'of `Figure 4showing an end view. of theidustfbagy cradlesand casing;

Figure 9 is a View of .the clamp looking along lline 9-9 of Figure 6, withoutfdust bag;

Figure 10 is a view of the clamp looking along line I--IU :of vFigure .6, :without throw-away receptacle;

.Figure 11 isa vfront. View of the, clamp looking along line II-iI of Figure'G; withoutdust'l bag andfthrow-.away receptacle;

:Figure 12- is. any enlarged sectional view `showing the:dust bag end projecting beyond the end of the cylinderand with a modified throw-away bag and clamp; vand :Figure 13.isaia similar View to that shown fin 'Figure 12,:-but'with'the clamp in place and ready 15o-remove the :dust bag and empty same.

Similar reference characters'refer to similar -part throughout fthe drawings.

AIntliestructure indicated in the drawingsuv-a conventional vacuumcleaner housing II hasia removable. cap I2 secured on with clips I3 and pins I4 so it may be readily disconnected therefrom. The cap` hasl a spout I5 to which the cleaner hose I6 is attached. When the cap I2 is removed as indicated in Figure 5, it allowsv a holder` consisting of a perforated screen cylinder I1 with its collar I8.to unseat itself froman I9 in the end portion :of the housing Il. In unseating the collar `is projected out. of the housing a substantial part of its length by a circular; supporting cradle'Z surrounding it. This is done under the tension -of severaltcoiledpisprings 2| spaced around ythe screen like cylinder I'I and in between the cradle and shoulder I9 to which they are attached suitably and adjustably. A conventional cloth dust bag 22 of circular cross-section is secured tightly to the collar I8 by the walls of the screen cylinder II. The bag is closed at its bottom 23 and opens at the top. It collects the dust carried into the housing II under the suction of an air turbine mechanism 24 actuated by a motor 25 in the usual manner. The dust is segregated in the bag 22 and the air released therefrom through the housing while the vacuum cleaner is being used. The cylinder I'I and bag 22 cannot come out of the housing beyond a predetermined line, due to the obstruction by the cap I2.

On the detachment of the cap I2 and automatic projection of the cylinder I 1 from the housing, the accumulated dust in the bag 22 is readly for dumping. This is performed preferably by clamping on a cylindrical paper or composition receptacle 26 having a relatively stil mouth ring 27, to bear against the collar I8. The receptacle is termed an auxiliary receptacle or trow-away bag. The collar is made dust tight in a particular manner by having it formed over into a ring, as indicated in Figure 6, and swaged over to hold jpurposes, keeps the dust bag from collapsing, and

allows the holder and bags to be given a resiliv ent shaking.

the screen cylinder I'I and an internal circular,v

shell 28, with the end of the bag 22 in between, in tight relation. The clamping on of the receptacle 26 is performed readily and conveniently by slipping a resiliently tensioned clamp 29 over both the collar IB and the mouth ring 2'I to bring them together properly. The clamp 29 is preferably constructed as shown in Figures 9, 10 and 11 of thin flat semi-rigid material formed in U- form having a relatively large bend 30 about its middle portion of a resilient nature. It also has stepped bent portions 3| and 32 respectively at its ends adapted to t into one another when closed as indicated in Figure 7. A hole 33 of tapered form and slot 34 are provided in the upper leg 35 and arranged to slip around the cylinder screen Il', below the collar I8 without removing the cylinder I'I from the housing and hold on` to same.

The lower leg portion 36, is formed with a circular hole 37 adapted to receive and hold the throw-away bag 26 thereto at the mouth ring 27, as shown in Figure 6.

When the throw-away bag is clamped to the dust bag 22 in its projected position, it is ready to receive the accumulated dust and debris from the cloth dust bag 22. This is done by inverting the bag 22, as shown in Figure 7 until the dust has been deposited in the throw-away bag 26. After this is accomplished, the clamp 29 is detached and the throw-away bag removed and disposed of. The cylinder I7 and dust bag 22 are then forced resiliently back into the housing, against the tension of the cradle 20 and the springs 2I, and the cap I2 replaced so the vacuum cleaner will be available for further dust collecting. The reciprocation or telescoping of the cylinder I7 with the bag attached in a resilient manner can be used to facilitate the removal of dust sticking after dumping.

In the modied forms, shown in Figures l2 and 13, the throw-away bag 39 is of conventional form and material. Its open end is slipped over the collar I8 and held in place by a clamp in the form of a coiled spring 40 made in the form of a resilient bracelet.

The device in general is simple in structure, but results in a very eilicient method of remov- While but two general forms of the invention are shown in the drawings and described in the speciiications it is not desired to limit this application for patent to this particular form or in any other way otherwise than limited by the scope thereof, as it is appreciated that other forms could be made that would use the same principles and come within the scope of the appended claim.

Having thus described the invention what is claimed is: i v

A vacuum cleaner dust bag ejecting and unloading device comprising, in combination, a housing provided at one end with an annular shoulder, a cap for closing the end of said housing adjacent said shoulder, a cradle slidably positioned within said housing, tensioning means secured to said cradle and to said shoulder, a dust bag in said housing, a collar at its open end normally resting against said cap when the late ter is in closed position, saidcradle comprisinga circular ring surrounding said dust bag and said tensioning means consisting of a plurality of heli,- cal springs anchored in said circular ring and in said shoulder, a ioraminated `cylinder surrounding said bag and having one end secured to said collar and having its opposite end resting on said cradle, whereby, upon opening of said cap, said bag and cylinder will be ejected from the housmg.

CHARLES KEPLER BROWN, JR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATESy PATENTS Number Name Date 1,855,672 Gudka Apr. 26, 1932 2,022,249 Lofgren Nov. 26, 1935 2,041,401 Eldred May 19, 1936 2,084,492 Heuser June 22, 1937 2,222,077 Kahn Nov. 19, 1940 2,272,394 Armstrong Feb. 10, 1942 2,286,421 Kahn June 16, 1942 FORETGN PATENTS Number Country Date 270,493 Great Britain s May 12, 1927 

